Variadic macros are C99 and ugly in C++. If we would want to do it differently
we should rather rely on C++0x's initializer lists. But since we cannot assume
all compilers we want create_project to build support that we cannot do that.
User-visible output and project-specific names are now defined in a config header.
This allows an easier usage of the create_project tools in other scummvm-derived projects (such as residual).
